Free estimate — verify against local code before building
Asphalt Calculator
Enter driveway size and compacted thickness to get hot-mix tons, gravel base tons, truck loads, and cost.
What this calculator includes
Asphalt plants sell hot mix by the ton, so a driveway estimate is really a density problem: area × compacted thickness gives cubic feet, and the plant's in-place density (typically 142–148 lb/ft³) converts that to tons. This calculator adds a compaction and yield allowance, rounds up to the half ton, sizes the crushed-aggregate base underneath, converts the order into tandem truck loads, and prices both layers. Density and every allowance stay editable — verify them with your plant, because hot mix arrives at roughly 300°F and there is no second chance to re-order mid-pour.
How to use this asphalt calculator
- 01
Measure and pick a thickness
Measure the paved area's length and width. A 2–3 inch compacted lift suits an overlay over sound pavement; a full-depth residential driveway is typically 4–6 inches of asphalt placed in two lifts over a compacted base.
- 02
Verify density with the plant
Hot mix converts to tons through its in-place density — typically 142–148 lb/ft³. Ask the plant for the figure for your mix and enter it; a few lb/ft³ moves a large order by whole tons.
- 03
Size the gravel base
New pavement needs 4–8 inches of compacted crushed aggregate base. The calculator converts base depth to cubic yards and tons at a compacted 1.5 tons per cubic yard so you can order both materials together.
- 04
Plan trucks and crew
Divide the order into roughly 14-ton tandem loads and line up the paving crew before the first truck rolls. Hot mix arrives around 300°F and must be placed and compacted within minutes — this is professional work, not a DIY pour.
Calculation sources and review
Primary references and formula assumptions are linked so you can verify them against the selected product, supplier, and adopted local requirements.
Internal formula review completed July 13, 2026. What this review covers
- Asphalt Institute — engineering FAQs (opens in a new tab)
Typical in-place hot-mix density around 145 lb/ft³ and tonnage conversion.
- National Asphalt Pavement Association (opens in a new tab)
Industry guidance on mix types, lift thickness, and construction practice.
- Asphalt Institute — homeowner's guide (opens in a new tab)
Driveway thickness and aggregate base recommendations.
Frequently asked questions
How many tons of asphalt do I need per square foot?
One ton of 145 lb/ft³ hot mix covers about 165 sq ft at 1 inch compacted, so about 55 sq ft at 3 inches. Divide your area by the coverage at your thickness, then add roughly 10% for compaction and yield loss.
How thick should an asphalt driveway be?
A common residential spec is 4–6 inches of compacted hot mix placed in two lifts over 4–8 inches of compacted aggregate base. A 2–3 inch overlay is only appropriate over structurally sound existing pavement.
What does asphalt cost per ton?
Hot mix commonly runs $100–$200 per ton picked up at the plant, varying with oil prices, mix design, and region. Delivered, placed, and compacted driveway pricing is usually quoted per square foot by the contractor instead.
Can I pave a driveway with cold patch?
No. Cold patch is a repair product for potholes and utility cuts. Hot-mix paving arrives around 300°F and must be spread and rolled within minutes by a crew with a paver and compactor — hire a contractor for anything bigger than a repair.
Do I need a gravel base under asphalt?
Yes for new construction — the compacted aggregate base carries the load and controls drainage; asphalt is only the wearing surface. Skipping or under-compacting the base is the usual cause of early cracking and rutting.